Hot Wheels Fusion Factory Color Refill Kit, Yellow Keep the Fusion Factory producing new cars with Hot Wheels Fusion Factory Color Refill Kit Each pack includes a different color silicone syringe and 3 mixing tips, enough material to create 3 new cars! There are 7 different colors to choose from for endless hours of designing and making play Add a chassis and accessories and theyre ready to race Now kids can create their own unique customized cars